Oil burner



Oct. 6, 1925.

F. HENNEBHLE OIL BURNER Fi1ed Sept. 23, 1924 Patented ;Oct. 6, 1925.

UNITED STATES FRANK Hfl'N'N'EBHLE, OF CHICAGO, II.LINOIB.

OIL B'U'BNER.

Application flled September 28-, 1924. Se1ial N0. 739,878.

T0 all whom 2't may oonoern:

Be it known that I, FRANK HENNEBHLE, a ci tizen of the United States, residing at Chicago, in the county of Cook and State 0f Illinois, have invented certain new and useful Improvements in Oil Burners of which the following is a specification.

The invention relates t0 011 burners such as are adaptable for use as a substitute for coal fire-s for heating purposes 01' the 1ike and generally has for its object t0 provide a burn er 0f the type stated which opera'tes on the gravity principle, which is simple and inexpensive of construetion, and efl'ectively operable for the purpose f01 which it is designed.

The inventi on seeks to pro'vide an 011 burner of the type s tated which is particularly coinpact and simple 0f construction and operation and adaptable f0r being readily mounted within the fire pot 0f a stove 01' furnace and secured to the grate thereof, regardless of the particular style of grate. and in which the desired preheating und directing of the draft air for effecting a most e1ficient fue1 combustion is effectively provided for, means also being provided for readily regulating the flow of thefuel oil and for ensuring against waste 0f 0il by overflow due to carelessness on the part of the operator o1 an unforeseen emergency.

Wit-h the above and other objects in view, the invention further resides in those. novel details of construction, combination and arrangement of parts. all of which will be first fully described in detail. then be specifically pointed out in the appended claims and illustraced in the accompanying drawings, in which: v

Figure 1 is a vertical cr0ss section of my improved burner per se, the section being taken on the line 11 0n Figure 2, the association with the burner of an overflow actuated cutoff device being also diagrammatically shown, the manner of connection of that device with the burner and the manner of mounting that device in a fire pot beingr also indicated in dotted lines.

Figure 2 is a plan vieW of the invention.

In the drawings, in which like numera]s of reference indica'te like part s in all of the figures, 1 represents the base portion of the burner which is nrovided with an unriqht peripheral flange 2 which may be hook bolted. as at 3 to the particular grate strncture 4 upon which the device is to be mounted The base 1 is pr'ovided with a, depending flange 5 Which is adapted to engage the grate so as to provide an air space therebet-ween, it being understood that when the device is bolted upon the grate the surrounding apertures of th grate between the device and the fire pot Wall may be covered over with fire clay 01 otherwise to render impossible the induction 0f draft air in any other manner than through the burner, see Figure 1.

A frusto-coniform throat 6 extends upwardly from the base 1 and merges with a c v]indrical neck 7 whieh extends up into, but shorbof, the top of a crown cap 8 which is he1d in spaced relation with the neck 7 by the webs 9 (four being shown).

The crown cap 8 is curved downwardly to surround the neck-7 and provide a restricted discharge thi*oatway 10 therebetween.

It will be readily observed that the dr&ft

air passing up through the grate Will pass im: shown) of stepped 01' terraced annjular oil grooves 11, the lowermost groove 11, should the same overflow for reasons .later 130 be described, discharging into an annular overflow channel 12 confined by the periphera1 flange 2. When the device is in operation. fuel oil is fed to the uppermost oil groove 11 through the supplv pipe 13. a needle valve 14 serving to control the feed as desired. The band wheel cf the needle valve may be suitably marked as at 15 to cooperatewith an indicating meint in reVeatling the degree of openim of the valve.

When in operation, oil being fed to the uppermost srr0ove 11 will qra'dally overflow into the succeeding oil 9:rooves and 130 start the device the oil in these grooves is ignited in anv manner Common in the use 0f bnrners of the1svne stated As the crown cap 8 becomes hiszhly heated the draft air direcfed against the tonthereof Will be preheated and so directe'd'against the thin oil films provided bv the 0il grooves overflow as to vary efl'ectivel v act t0 vaporize the same and efiect efliciehi: aombustion thereof -sulficient t0 divi le circulation lout in a m'anner for permitting perfect circulation within -the t0p .p0rtion of the crown cap, means are provided f'or eflectively preheating the draft air and directing it against the 0il to be consumed in a manner providing for eflicient combustion.

Should the oil being fed into theuppermost groove 11 continue to overflow the same and the successive oil grooves, by reason 0f earelessness of the operator in falling to ignite the same er because 0'f the flame being snufied out by some emergency,

'the 0il would collect in the annular everflow channel l2 and if 110 safety means wer e provided might occasion great waste of 011 'and flooding of the fire pot.

T0 insure the cuttingolf of the fuel supply in case of an emergency,-I splice a Safety cut-ofi valve 16 into the fuel supply pipe, which said valve may be 015 any type desiralole, such as is provided with a autolf stem held to the valve opened position against the tendency of a spring or other agency to close the same. In the embo'diment shown in the drawings, the valve stem is indicated at 17 und a lever 18 is mounted to normally engage the stem and hold it,

agaihst the closing tendency, to the oper1 position.

A toggle link 19 is pivoteol t0 the l6ver 18 an d is provided with an abutment sei: screw 20 adapted to engage the sideof the valve to limit the movement of the link toward the said va)lve The link 19 is pivoted at 21 to a hell crank lever which includes the long arm 22 an'd a short arm 23. The' short arm 23 is pivoted at 24 to a bearin 25 projectirlg laterally from the valve. suitable bearing 26 projecting laterally from the, valve provides for ehe proper pivoting of the lever 18.

The other end of the long arm 22 of the hell crank lever is c0nnected to -a bail handle 27 which carries a trip bucket 28. An overflow discharge pipe 29 is connected to the base 1 in communication with the a1'mular overflow channel as at 30 and the said discharge pipe is so positi ned as to discharge an overflow of fuel oil from the annular 'channel into tli'e trip bucket.

VVhen sulficient oil has collected in the tr1p bucket 130 over-balance thg togglg g r xnection 192'123, thelever 18 will be permitted to swing downwardly on i1ts fixod supply of oil.

From the foregioing description, taken in connection With the accompa nying drawing, it is thought the novel details of construction, manner 0f operation and advant-ages of my invention will be readily understood by those skilled in the art to which it relates.

What I claim 1S'.

1. A device o1 the dass describedl comprising a base, a frusto-coniform throat extending upward from the base, a cylindrical neck extending upwardly from the throat an'd forming a restricbed air duct, a heating and expanding crown cap supported by the neck and into Which the neck discharges ancl having a flat top spaced above but in close relation 1to said neck and the edge thereof extended out anol curved downwardly inwardly t0 provide an expanding space much larger than the area of the neck and{ .a restricted anhular air discharge throatway surrounding the 0uter surface 01 the frusto-coniform throatin close relation thereto, and means for directing a thin film of 0il to the outer surface 0f the frustoooniform throat.

. 2. A device of the dass described compris-- ing a base a frusto-coniform thront extending upw'ard from tl1e base, und having a series of relatively slmllow annularlv stepped oil grooves in the 0uter surface thereof, n cylindrical neck extending upwardly from the throat and forming a restricted duct, a heating and expanding orown cap sup-porfecl by the neck and into which the ne ck discharges and having a flat t0p spaoed above butin cl0se relation c0 said neck ancl rhe edge thereof extended out and curved downwardly inwarclly to providdnn exparlding space much larger than the area 0f the neck and a restri cted annular air dis'charge throatway srrounding the outer surface cf the fri1sto-coniform thrnat in close relation thereco, ancl terminatin'g 011 a horizontal plane wich the juncture of the neck and the throat just above the uppermost 0il groove, and mear1s passing through the throat wall for directing a thin film of oil to the outer thmat surface by discharging intothe uppermost oil groove.

3. A device cf the dass described compiising' a base. a frusto-coniform throat extending upward from the base, and having a series of relatlveljrshalloW annularlv sfepped oil grooves in the outer surface thereof, a cvlindrical neck extending upwardly from the throat and forming' a restricted duct, a heatihg and expanding crown cap supported b) the neck and int Whiflh n ck discharges and having a flat top spaced above but in close relation to said neck and the edge thereof extended out and curved downwardly inwardly to provide an expanding space muoh larger than the area of bhe neck r=nd a restricted air discharge throatway surrounding' the ouber surface of the frustoconiform throat in close relation thereto, and terminating 011 a horizontal plane with the juncture of the neck.and the throat just above the uppermost 011 groove, means passing throu'gh the throat Wall for directing a thin film 0f oil to the outer throat surface by diseharging into the uppermost oil groove, the said restricfed annular discharge throatway being ot' a diametex great-er than the uppermost oil groovc butless than the succeeding ones thereof.

4. A device of the dass described comprising a base having an upwardly extending annular flan'ge confining an "'oil ov-erflow groove and depending flange providing a large air space beneath bhe base, hook holt-s for hooking over the annular flange and passing through the openings in a grate when the device is mounted in a fire pot for use, a frusto-coniform throa.t extending up- Ward frori1 the base, a cylindrical neck extendin'g upwardly from the throat and forming a restrictedduct, a heating and expanding crown capsupp0rfd by the neck und into which the neck disoharges und having a flat top spaced above but in close relation to said neck and the edge thereof extended 0ut and curved downwardly inwardly to provide an expanding space mach larger than the area of the neck und a, restricted annular air discharge throatway' surrouhdin the outer surface of. the frusto-coniform oat in olose relation thereto, and means for directing a thin film of oil to the outer surface of he frusto-coniform throat.

5. A device of the dass described. comprising a base having' an upwardly extending annular flange confining an oil overflow groove a.nd a depending flange providing a large1 air space beneath the base, hook bolts for hooking over the annular flange and passing through the openings in a, grata when the device is mounted in a fire pot for use, a frusto-coniform throat extending upward from the base, and having a series o'f relatively shallow annularly stepped oil grooves in the outer suiface thereof, a cylindrical neck extending upwardly from the throat a.nd forming a restricted air duct, a heating and expanding crown cap supported by the neck and into which the neck dischar s and having a flattop spaced abo-ve but 1n close relation to said neck and the sge thereof extended out and curved downwardly inwardly to provide an expandin'g space much larger than the area of ehe neck und a restricted annular air discharge thmoatway surrounding the outer surface of the frusto-coniform throat in close relation thereto, and terminating on a horizontal plane with the juncture of the neck and the thro'at just above the uppermost 011 groove, means passing through the throat wall for directing a thin film of oil to the outer thront surface by disoharging into the uppermost i1 groove.

FRANK HENNEBHLE. 

